摘要
为实现油田采出水的高效、环保处理,符合现阶段绿色矿山的建设要求,文中结合电絮凝和电氧化工艺特点,进行单因素影响实验,考察了不同因素对两种工艺采出水中油、悬浮物和COD值的影响,通过组合工艺实现水质深度处理,并利用现场装置进行连续长周期监测,完成实验。结果表明,电絮凝工艺中油的去除率始终高于COD,电氧化工艺中COD值的去除率高于油和悬浮物,电絮凝工艺的最优条件为运行时间60 min、电流0.8 A,此时油、悬浮物和COD的去除率分别为95.41%、92.67%和85.42%;电氧化工艺的最优条件为运行时间40 min、催化剂添加量300 g/L;现场采出水组合处理工艺改造后,每天平均节约清水量500 m^(3),每年可减少泄漏量1000 m^(3),由此核算的节水及环保效益合计254.7万元,投资回收期为1.65 a。
In order to realize the high efficient and environmental protection treatment of oilfield produced water,the construction requirements of green mines at the present stage are being met.Combined with the characteristics of electroflocculation-electrooxidation process,the influences of different factors on the effluent oil,suspension and COD value of the two processes are investigated based on single factor influence experiment.The water quality is further treated by the combined process,and the field equipment is used for continuous long-term monitoring to finish the experiment.The results show that the removal rate of oil in electroflocculation process is always higher than that of COD,and the removal rate of COD in electrooxidation process is higher than that of oil and suspension.The optimal conditions of electroflocculation process are 60 min running time and 0.8 A current,and the removal rates of oil,suspension and COD are 95.41%,92.67%and 85.42%respectively.The optimum conditions of electrooxidation process are 40 min running time and 300 g/L catalyst addition.After the transformation of the on-site produced water process,the average daily clean water can be saved by 500 m^(3),and the annual leakage can be reduced by 1000 m^(3).The total water saving and environmental protection benefits calculated by this method are 2547000 yuan,and the payback period of investment is 1.65 years.
作者
高越
GAO Yue(No.7 Oil Production Plant of Daqing Oilfield Co.,Ltd.)
出处
《石油石化节能与计量》
CAS
2024年第3期32-36,共5页
Energy Conservation and Measurement in Petroleum & Petrochemical Industry
关键词
电絮凝
电氧化
采出水
COD
达标
悬浮物
electroflocculation
electrooxidation
produced water
COD
standard
suspension
